When to plant eggplants in Kostanay: 30 May – 12 June

In Kostanay, eggplant: sow for seedlings from 10 March to 13 April; plant into a greenhouse from 9 May to 12 June; plant out into open ground from 30 May to 12 June. For plants and seeds, the places nearby include Invent.kz (garden centre, 3 km) and Садовод (garden centre, 3 km); addresses and opening hours are below.

Eggplant in Kostanay: soil, season and weather

In Kostanay the soil, not frost, sets the date: the last frost is over around 4 May, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 30 May, 26 days later. 125 days separate planting out (30 May) from the first autumn frost (2 October); the card's 70 days to the first harvest leave 55 for picking, so a start 7 weeks late would still fit.

Last spring frost	4 May
Top 7 cm of soil at 18 °C	30 May, 26 days after the last frost
Into an unheated greenhouse	9 May – 12 June; May outside: 6.9 °C at night, 20.4 °C by day; card 21–29 °C
First autumn frost	2 October, 125 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	8 August – 21 August
Days left for picking	55
Daylight	12:55 on 31 March, 16:32 on 30 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, October, has 8 rainy days

The same dates in Kostanay hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Kostanay: care after planting

Planted on 30 May: in the first weeks water every 4 days.

Feeding, by the card’s schedule from that day:

30 May — feed: balanced (NPK)
27 June — feed: nitrogen

Pests and diseases of eggplant to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Kostanay during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, July, averages 26.2 °C. Months that stay below 21 °C even by day on average: May (20.4 °C), September (17.3 °C) and October (8.9 °C). Nights average below 21 °C in every month of the season, from 0.3 °C to 15.3 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.4	6.9	48	8	15:50
June	23.9	12.4	51	8	16:56
July	26.2	15.3	60	10	16:30
August	24.7	13.5	51	8	14:50
September	17.3	7.1	37	7	12:45
October	8.9	0.3	36	8	10:40

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

All the nearest cities on our list plant eggplant later than Kostanay; the closest date is in Chelyabinsk, 1 day later.

City	Distance	Date	Difference
Chelyabinsk	261 km	31 May – 14 June	1 day later
Kurgan	273 km	1 June – 11 June	2 days later
Magnitogorsk	307 km	2 June – 6 June	3 days later
Kokshetau	384 km	1 June – 9 June	2 days later
Petropavl	405 km	7 June – 9 June	8 days later
Yekaterinburg	447 km	15 June – 20 July	16 days later

Where to buy eggplant plants and seeds near Kostanay

Buy plants ready to set out from 30 May to 12 June (from 9 May to 12 June for an unheated greenhouse); seed for raising your own is sown from 10 March to 13 April. Within 15 km of Kostanay OpenStreetMap lists 3 garden centres, 10 markets and 1 farm shop (collected 27 October 2026).

Рынок Емшан — market
4 km
Рынок — market
5 km
Invent.kz — garden centre
Рабочая көшесі 165, Қостанай · 3 km · invent.kz
Садовод — garden centre
улица Воинов-Интернационалистов 8б · 3 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

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